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ICPP
2009
IEEE

Group Operation Assembly Language - A Flexible Way to Express Collective Communication

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Group Operation Assembly Language - A Flexible Way to Express Collective Communication
—The implementation and optimization of collective communication operations is an important field of active research. Such operations directly influence application performance and need to map the communication requirements in an optimal way to steadily changing network architectures. In k, we define an abstract domain-specific language to express arbitrary group communication operations. We show the universality of this language and how all existing collective operations can be implemented with it. By design, it readily lends itself to blocking and nonblocking execution, as well as to off-loaded execution of complex group communication operations. We also define several offline and online optimizations (compiler transformations and scheduling decisions, respectively) to improve the overall performance of the operation. Performance results show that the overhead to express current collective operations is negligible in comparison to the potential gains in a highly optimized imp...
Torsten Hoefler, Christian Siebert, Andrew Lumsdai
Added 23 May 2010
Updated 23 May 2010
Type Conference
Year 2009
Where ICPP
Authors Torsten Hoefler, Christian Siebert, Andrew Lumsdaine
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